Retaining needle with wing

ABSTRACT

There is here provided an easily operable winged indwelling needle capable of surely preventing accidental sticking. A winged indwelling needle  1  comprises a hollow needle  2  having a knife point at its tip, a hub  3  provided at a rear end of the hollow needle  2,  a tub-shaped member  6  for housing the hollow needle  2  and the hub  3,  a pair of wing-shaped members  7  provided on an outer surface side of a side wall of the tub-shaped member  6,  protrusion maintaining means for releasably maintaining a state in which the hollow needle  2  is protruded as much as a predetermined length from a tip of the tub-shaped member  6,  and housing maintaining means for maintaining a state in which the hollow needle  2  is housed in the tub-shaped member  6.  The above winged indwelling needle further comprises a rack  4  provided in junction with the rear end of the hub  3,  and a gear  8  engaged with the rack and supported on an inner surface side of the side wall of the tub-shaped member  6.  The hollow needle  2  is driven through the rack  4  by rotating the gear  8  to be housed in the tub-shaped member  6.

[0001] This application is the national phase under 35 U.S.C. §371 ofPCT International Application No. PCT/JP02/07591 which has anInternational filing date of Jul. 26, 2002, which designated the UnitedStates of America.

TECHNICAL FIELD

[0002] The present invention relates to a winged indwelling needle whichis used for temporarily securing a venous path or the like.

BACKGROUND ART

[0003] As a needle used for a medical practice such as temporarysecuring of a venous path, a winged indwelling needle has conventionallybeen known, which comprises a hollow needle, a hub for holding a rearend of the hollow needle, and a pair of wing-shaped members formedintegrally with the hub. When the winded indwelling needle is used, amedical personnel such as a doctor or a nurse first removes a protectorattached to the hollow needle, grips the pair of wing-shaped members ina superposed manner, and then sticks the hollow needle into a vein of apatient. Then, he fixes the hollow needle by opening the pair ofwing-shaped members, and pasting them to a body surface of the patientby adhesive tape or the like.

[0004] After used, the winged indwelling needle is pulled out, anddisposed of. In this case, if the hollow needle is exposed, the medicalpersonnel or a worker engaged in disposal (abbreviated to medicalpersonnel, hereinafter) may stick the hollow needle into a finger or thelike accidentally (abbreviated to accidental sticking, hereinafter).Here, if the patient suffers from an infectious disease such as HIV oracute hepatitis, there is a possibility that the medical personnel maybe infected with the disease through the hollow needle.

[0005] Conventionally, in order to prevent such accidental sticking,recapping has been carried out, which attaches the protector removedbefore the use again to the used hollow needle. The conventionalprotector has a hollow cylindrical body provided with a length equal tothat of the hollow needle. Accordingly, the recapping is carried out byapproaching the protector and the hollow needle to each other in anextended direction of the hollow needle, and inserting the hollow needlefrom its tip into an opening end of the protector.

[0006] However, in the protector, since fingers gripping the protectorare positioned in a moving direction of the tip of the hollow needle, aproblem may occur, i.e., accidental sticking of the finger by the hollowneedle during the recapping.

[0007] In order to solve the foregoing problem, Japanese Patent No.3198492 discloses a winged indwelling needle, which comprises a hollowneedle, a holder, into which the hollow needle is inserted, andprotruded from a tip, and a pair of wing-shaped members provided in theholder. In the disclosed winged indwelling needle, a hub provided at arear end of the hollow needle is freely engaged with the holder, and thehollow needle is protruded from the tip of the holder while the hub isin the engaged state with the holder. Accordingly, the winged indwellingneedle can be fixed by sticking the hollow needle protruded from the tipof the holder into a vein of a patient, and by opening the pair ofwing-shaped members and pasting them to a body surface of the patient.

[0008] To remove the hollow needle, the hollow needle is housed in theholder by disengaging the hub from the holder while the wing-shapedmembers are pasted to the patient, and retreating the hub. Thus, theholder becomes a protector of the hollow needle, which can preventaccidental sticking.

[0009] However, in the winged indwelling needle described in thePublication, in order to disengage the hub from the holder, the holdermust be held by one hand, and a disengaging operation must be carriedout by the other hand. Consequently, inconvenience, i.e., a difficultyof operation without use of two hands, still remains.

DISCLOSURE OF THE INVENTION

[0010] The present invention was made to solve the foregoinginconvenience, and it is an object of the invention to provide an easilyoperable winged indwelling needle capable of surely preventingaccidental sticking.

[0011] In order to achieve the object, a winged indwelling needle of thepresent invention comprises a hollow needle having a knife point at itstip, a hub provided at a rear end of the hollow needle, a tub-shapedmember for housing the hollow needle and the hub slidingly in alongitudinal direction, a pair of wing-shaped members provided on anouter surface side of a side wall of the tub-shaped member, protrusionmaintaining means for releasably maintaining a state in which the hollowneedle is protruded as much as a predetermined length from a tip of thetub-shaped member, and housing maintaining means for maintaining a statein which the hollow needle is housed in the tub-shaped member, the abovewinged indwelling needle further comprising a rack provided in junctionwith the rear end of the hub, and a gear engaged with the rack andsupported on an inner surface side of the side wall of the tub-shapedmember, the hollow needle being driven through the rack by rotating thegear to be housed in the tub-shaped member.

[0012] According to the winged indwelling needle of the presentinvention, first, a medical personnel such as a doctor or a nurse gripsthe tub-shaped member, or the pair of the wing-shaped members in asuperposed manner, and sticks the hollow needle into a patient. At thistime, the hollow needle is maintained in the state of being protrudedfrom the tip of the tub-shaped member by the predetermined length by theprotrusion maintaining means. As a result, since the hollow needle ismaintained in the state of being protruded from the tip of thetub-shaped member, and not moved forward/backward, a needle point isnever moved, thereby facilitating the sticking operation.

[0013] In the winged indwelling needle, after the hollow needle is stuckinto the patient, the hollow needle is fixed by opening the wing-shapedmembers, and pasting them to a body surface of the patient by adhesivetape or the like. At this time, the protrusion maintaining meansregulates retreating of the hollow needle, making it possible to preventthe hollow needle from being pulled out from the patient.

[0014] When the hollow needle is pulled out from the body of thepatient, first, the regulation by the protrusion maintaining means isreleased. Then, the tub-shaped member is held by one hand. When the gearis rotated by fingers of the hand gripping the tub-shaped member, thegear drives the hollow needle through the rack, and the hollow needle ishoused in the tub-shaped member. Then, by using the housing maintainingmeans, the hollow needle is maintained in the state of being housed inthe tub-shaped member at a position where the tip of the hollow needleis housed in the tub-shaped member. As a result, it is possible toprevent the hollow needle from being protruded again from the tip of thetub-shaped member.

[0015] After the hollow needle is housed in the tub-shaped member, thetub-shaped member operates as a protector, thereby preventing the fingerof the medical personnel from touching the hollow needle.

[0016] According to the winged indwelling needle of the presentinvention, the conventional necessity of approaching the protector andthe hollow needle to each other by both hands, and inserting the hollowneedle into the opening of the protector is eliminated, making itpossible to surely prevent accidental sticking. Moreover, in the wingedindwelling needle of the invention, since the gear is rotated by onehand to house the hollow needle in the tub-shaped member, thusfacilitating an operation.

[0017] In accordance with a first mode, the protrusion maintaining meanscomprises, for example, a first extension member provided at the rearend of the rack to be extended in a direction along the side wall, and alocking member which is provided to freely open and close the rear endof the tub-shaped member and which locks a rear end of the extensionmember so as to maintain a state in which the hollow needle is protrudedas much as a predetermined length from the tip of the tub-shaped memberwhen the rear end of the tub-shaped member is closed. Alternatively, inaccordance with a second mode, the protrusion maintaining meanscomprises a first handle integrally attached to the gear rotatablytogether with the gear, and a first protruded portion provided on aninner surface side of the side wall at the rear end of the tub-shapedmember to detachably lock the first handle at a position where thehollow needle is protruded as much as a predetermined length from thetip of the tub-shaped member.

[0018] In accordance with a first mode, the housing maintaining meanscomprises, for example, a second protruded portion provided to beprotruded from the tip of the rack to its side, and an engaging concaveportion provided on the inner surface side of the side wall at the rearend of the tub-shaped member and engaged with the second protrudedportion so as to maintain a state in which the hollow needle is housedin the tub-shaped member. Alternatively, in accordance with a secondmode, the housing maintaining means comprises a second handle integrallyattached to the gear rotatably together with the gear, and a thirdprotruded portion provided on the inner surface side of the side wall inthe tip of the tub-shaped member to detachably lock the second handle ata position where the hollow needle is housed in the tub-shaped member.In the second mode of the housing maintaining means, the second handlepreferably comprises, on its tip, a branch portion which is arranged infront of the knife point of the hollow needle when the second handle isengaged with the third protruded portion.

[0019] The first and second modes of the protrusion maintaining means,and the first and second modes of the housing maintaining means can befreely combined with each other. Moreover, when the second mode of theprotrusion maintaining means is combined with the second mode of thehousing maintaining means, preferably, the first and second handles areconstructed similarly to each other.

[0020] In the winged indwelling needle of the present invention, therack preferably comprises a second extension member extended from therear end to the side to lock a rear end surface of the tub-shapedmember, thereby preventing the tub-shaped member from moving behind therack. According to the second extension member, the operation ofsticking the hollow needle into the patient can be performed more stablyby preventing the tub-shaped member from being moved behind the rack.

BRIEF DESCRIPTION OF THE DRAWINGS

[0021]FIG. 1 is an explanatory sectional view showing constitution of awinged indwelling needle according to a first embodiment of the presentinvention.

[0022]FIG. 2 is a partially cutout plan view of the winged indwellingneedle shown in FIG. 1.

[0023]FIG. 3 is an explanatory sectional view showing an operation ofthe winged indwelling needle shown in FIG. 1.

[0024]FIG. 4 is an explanatory partially cutout plan view showing anoperation of the winged indwelling needle shown in FIG. 1.

[0025]FIG. 5 is an explanatory sectional view showing a wingedindwelling needle according to a second embodiment of the presentinvention.

[0026]FIG. 6 is a partially cutout plan view of the winged indwellingneedle shown in FIG. 5.

[0027]FIG. 7 is an explanatory sectional view showing an operation ofthe indwelling needle shown in FIG. 5.

[0028]FIG. 8 is an explanatory partially cutout plan view showing anoperation of the indwelling needle shown in FIG. 5.

BEST MODES FOR CARRYING OUT THE INVENTION

[0029] First, description will be made of a first embodiment of thepresent invention.

[0030] As shown in FIGS. 1 and 2, a winged indwelling needle 1 of thepresent invention comprises a hollow needle 2 having a knife point onits tip, and a hub 3 provided at a rear end of the hollow needle 2. Ahollow rack 4 is provided in junction with a rear end of the hub 3. Atube 5 is connected to a rear end of the rack extended in a reardirection, which guides drug solution through the hub 3 and the rack 4to the hollow needle 2.

[0031] The hub 3 and the rack 4 are housed in a tub-shaped member 6 soas to be freely slid in a longitudinal direction therein. The tub-shapedmember 6 is made of a synthetic resin and, an outer surface side of aside wall, a pair of wing-shape members 7 are horizontally providedintegrally. The tube 5 may be inserted into the rack 4, and connected tothe hub 3.

[0032] The tub-shaped member 6 has two side walls extended upward onboth sides of the housed rack 4. Between the side walls, a gear 8engaged with the rack 4 is supported. An upper portion of the gear 8 isexposed from upper edges of both side walls of the tub-shaped member 6indicated by a chain line in FIG. 1, so as to be freely rotated.

[0033] In the tub-shaped member 6, a portion above the rack 4 is openedin a part where the gear 8 is provided. In a tip portion not in contactwith the gear 8, an upper surface is sealed to form a cylindricalportion 13.

[0034] At a rear end of the rack 4, an extension member 9 a is providedto be extended upward. On the other hand, at a rear end of thesub-shaped member 6, a locking member 10 L-shaped on plane is providedin junction so as to be bent freely in a position for contact with theextension member 9 a in the upper side of the rack 4 on one side of theside wall. An engaging concave portion 11 a is provided in a tip of thelocking member 10 so as to be freely engaged with a protruded portion 12a protruded on an outer surface side of the other side wall of thetub-shaped member 6. The protruded portion 12 a is formed to have atapered rear side, and a surface of a tip perpendicular to the sidewall.

[0035] As a result, by engaging the engaging portion 11 a with theprotruded portion 12 a, the locking member 10 locks the extension member9 a, and regulates retreating of the rack 4. That is, the presentinvention constructs a first mode of protrusion maintaining means formaintaining a state of the hollow needle 2 being protruded from the tipof the tub-shaped member 6 by a predetermined length by the extensionmember 9 a and the locking member 10.

[0036] In this case, if the rack 4 is disengaged from the gear 8, thetub-shaped member 6 may be retreated with respect to the position of therack 4, making it impossible to fix the hollow needle 2 to thewing-shaped member 7. Thus, in the embodiment, an extension member 9 bis provided at a rear end of the rack 4, which is extended in a sideface direction. By locking the rear end surface of the tub-shaped member6, the extension member 9 b can regulate the tub-shaped member 6 toprevent its retreating with respect to the rack 4.

[0037] On a tip side face of the rack 4, a protruded portion 12 a isformed to have a tapered rear side, and a tip surface perpendicular tothe side wall. On the other hand, at the rear end of the tub-shapedmember 6, on an inner surface side of the side wall, in a positionopposite the side face of the rack 4, an engaging concave portion 11 bis provided to have a tapered tip, and a surface perpendicular to theinner surface side of the side wall after the tapered portion.

[0038] As a result, when the hollow needle 2 is housed in the tub-shapedmember 6, the rack 4 is regulated for forward/backward movement byengaging the perpendicular surface of the protruded portion 12 b withthe perpendicular surface of the engaging portion 11 b. That is, theembodiment forms a first mode of housing maintaining means formaintaining a state of the hollow needle 2 being housed in thetub-shaped member 6 by engaging the protruded portion 12 b with theengaging portion 11 b.

[0039] Next, description is made of a method for using the wingedindwelling needle 1 of the embodiment by referring to FIGS. 1 to 4.

[0040] To use the winged indwelling needle 1 of the embodiment, themedical personnel first grips the tub-shaped member 6, or the pair ofwing-shaped members 7 in a superposed manner, and sticks the hollowneedle 2 protruded from the tub-shaped member 6 into a patient.

[0041] Then, the medical personnel expands the pair of wing-shapedmembers 7, and retains the hollow needle 2 by pasting them to a bodysurface of the patient to fix the hollow needle 2. As a result, a venouspath is temporarily secured by the hollow needle 2. Then, drugadministration is carried out by introducing drug solution or the likefrom the tube 5 through the hollow needle 2 into a vein.

[0042] When the hollow needle 2 is retreated during the sticking orretaining, the extension member 9 a provided at the rear end of the rack4 is locked by the locking member 10. As a result, it is possible tomaintain the state of the hollow needle 2 being protruded from the tipof the tub-shaped member 6 by a predetermined length by blocking theretreating of the hollow needle 2. In addition, during the retaining ofthe hollow needle 2, the extension member 9 b locks the rear end surfaceof the tub-shaped member 6, thereby preventing the tub-shaped member 6from being retreated with respect to the position of the hollow needle2. Therefore, the hollow needle 2 is surely fixed by pasting thewing-shaped members 7, making it possible to perform the operation suchas drug administration in a stable manner.

[0043] To remove the hollow needle 2, and house it in the tub-shapedmember 6, the medical personnel first operates the engaging portion 11 aof the locking member 10, and moves it in a direction away from the sidewall surface of the tub-shaped member 6. As a result, the engagementbetween the protruded portion 12 a and the locking member 11 a isreleased, the extension member 9 a is not regulated by the lockingmember 10, and the rack 4 is freely moved to the rear side of thetub-shaped member 6.

[0044] Then, as indicated by an arrow in FIG. 1, the medical personnelrotates the gear 8 toward the tip of the hollow needle 2 by a finger.Upon the rotation of the gear 8, the rack 4 engaged with the gear 8 isdriven to be retreated, and the hollow needle 2 is retreated as shown inFIGS. 3 and 4.

[0045] After the tip of the hollow needle 2 has been retreated to theposition of being housed in the tub-shaped member 6, the protrudedportion 12 b provided on the outer surface side of the side wall of therack 4 is engaged with the engaging portion 11 b provided on the innersurface side of the side wall of the tub-shaped member 6. In this case,the protruded portion 12 b has a tapered rear end. Thus, the rear end ofthe protruded portion 12 b is guided by the tapered portion provided inthe tip of the engaging portion 11 b to be moved in a rear direction,and engaged with the concave portion of the engaging portion 11 b aftergoing over the tapered portion.

[0046] Therefore, the winged indwelling needle 1 can maintain the stateof the hollow needle 2 being housed in the tub-shaped member 6 and, oncehoused in the tub-shaped member 6, the hollow needle 2 is neverprotruded again from the tip of the tip of the tub-shaped member 6.Thus, it is possible to prevent the medical personnel from accidentallysticking the hollow needle 2 protruded from the tip of the tub-shapedmember 6.

[0047] Furthermore, since the tub-shaped member 6 has the cylindricalportion 13 formed on its tip, the tip of the housed hollow needle 2 issurrounded with the cylindrical portion 13. Thus, it is possible tosurely prevent the finger of the medical personnel or the like fromtouching the tip of the hollow needle 2 contaminated with blood or thelike of the patient.

[0048] Next, description is made of a second embodiment of the presentinvention.

[0049] As shown in FIGS. 5 and 6, a winged indwelling needle 1 accordingto a second embodiment of the present invention is completely similar inconstitution to the winged indwelling needle 1 of the first embodimentexcept the protrusion maintaining means and the housing maintainingmeans. Thus, similar components are denoted by similar referencenumerals, and detailed description thereof will be omitted.

[0050] The second embodiment employs a second mode, where the protrusionmaintaining means includes an L-shaped handle 14 integrally attached tothe gear 8, and associatively rotated therewith, and a protruded portion12 c provided at a rear end of the tub-shaped member 6 to detachablylock the L-shaped handle 14. The protruded portion 12 c is provided tobe protruded on the inner surface side of the side wall at the rear endof the tub-shaped member 6. The protruded portion 12 c locks theL-shaped handle 14, and regulates rotation of the L-shaped handle 14toward the tip of the tub-shaped member 6.

[0051] The second embodiment employs a second mode, where the housingmaintaining means includes the L-shaped handle 14, and a protrudedportion 12 d provided in the tip of the tub-shaped member 6 todetachably lock the L-shaped handle 14. The protruded portion 12 d isprovided to be protruded on the inner surface side of the side wall inthe tip of the tub-shaped member 6. The protruded portion 12 d locks theL-shaped handle 14, and regulates rotation of the L-shaped handle 14 inthe rear end direction of the tub-shaped member 6.

[0052] In this case, if the rack 4 is disengaged from the gear 8, thehollow needle 2 may be pulled out from the rear end of the tub-shapedmember 6, the tub-shaped member 6 may not be operated as a protector.Thus, in the embodiment, a protruded portion 12 e is provided to beprotruded from the tip of the rack 4 to the side, and a protrudedportion 12 f provided on the inner surface side of the side wall at therear end of the tub-shaped member 6. As a result, when the hollow needle2 is housed in the tub-shaped member 6, the protruded portion 12 e ofthe rack 4 is locked by the protruded portion 12 f of the tub-shapedmember 6, thereby preventing the hollow needle 2 from being pulled out.

[0053] In the winged indwelling needle 1 of the embodiment, thetub-shaped member 6 has an opening above the rack 4 on a full length,and the side wall of the tub-shaped member 6 substantially covers thegear 8 excluding the L-shaped handle 14. The L-shaped handle 14 includesa branch portion formed on its tip.

[0054] Next, description is made of a method for using the wingedindwelling needle 1 of the embodiment by referring to FIGS. 5 and 6.

[0055] In the winged indwelling needle 1 of the embodiment, completelysimilarly to the first embodiment, the hollow needle 2 is stuck into thepatient, fixed and retained. Then, drug administration is carried outthrough the tube 5.

[0056] In this case, if the hollow needle 2 is retreated, the gear 8engaged with the rack 4 is rotated toward the tip of the hollow needle2. However, the L-shaped handle 14 integrally attached to the gear 8 islocked by the protruded portion 12 c. As a result, the L-shaped handle14 locked in the protruded portion 12 c regulates rotation of the gear 8to block retreating of the hollow needle 2, making it possible tomaintain the state of the hollow needle 2 being protruded from the tipof the tub-shaped member 6 by a predetermined length. In addition,during the retaining of the hollow needle 2, completely similarly to thefirst embodiment, the extension member 9 b locks the rear end surface ofthe tub-shaped member 6. Thus, the hollow needle 2 is surely fixed bypasting the wing-shaped members 7, making it possible to perform theoperation such as drug administration in a stable manner.

[0057] To remove the hollow needle 2, and house it in the tub-shapedmember 6, the medical personnel first grips the L-shaped handle 14, androtates the hollow needle toward to a tip as indicated by an arrow inFIG. 5. Since the tub-shaped member 6 and the protruded portion 12 c aremade of synthetic resins, by applying a predetermined force or more tothe L-shaped handle 14, the protruded portion 12 c abutted on theL-shaped handle 14 is widened toward the side wall of the tub-shapedmember 6. Thus, the L-shaped handle 14 can be rotated toward the tip ofthe hollow needle 2 after going over the protruded portion 12 c.

[0058] Then, when the L-shaped handle 14 is gripped, and rotated in adirection indicated by an arrow in FIG. 5, since the L-shaped handle 14is integrally attached to the gear8, the gear 8 is also rotatedassociatively. As a result, the rack 4 engaged with the gear 4 is drivento be retreated, and the hollow needle 2 is retreated as shown in FIGS.7 and 8.

[0059] After the tip of the hollow needle 2 has been retreated to theposition of being housed in the tub-shaped member 6, by applying apredetermined force or more to the L-shaped handle 14, the protrudedportion 12 d abutted on the L-shaped handle 14 is widened toward theside wall of the tub-shaped member 6. Then, the L-shaped handle 14 islocked on the bottom surface of the protruded portion 12 d after goingover the protruded portion 12 d. As a result, the winged indwellingneedle 1 can maintain the state of the hollow needle 2 being housed inthe tub-shaped member 6 and, once housed in the tub-shaped member 6, thehollow needle 2 is never protruded again from the tip of the tub-shapedmember 6. Therefore, it is possible to prevent the medical personnel orthe like from accidentally sticking the hollow needle 2 protruded fromthe tip of the tub-shaped member 6.

[0060] Furthermore, in a state where the L-shaped handle 14 is locked onthe bottom surface of the protruded portion 12 d, the branch portion 14a is arranged in front of the knife point of the hollow needle 2 in thetub-shaped member 6. As a result, in the tub-shaped member 6, theopening surface above the rack 4, and the tip opening as a path forprotrusion of the hollow needle 2 are covered with the L-shaped handle14.

[0061] Thus, it is possible to surely prevent the finger of the medicalpersonnel or the like from touching the tip of the hollow needle 2contaminated with blood or the like of the patient. Moreover, by thebranch portion 14 a, it is possible to surely prevent the hollow needle2 from being protruded again from the tip of the tub-shaped member 6.

[0062] After the hollow needle 2 has been housed in the tub-shapedmember 6, the protruded portion 12 e provided on the side face in thetip of the rack 4 is locked by the protruded portion 12 f provided onthe inner surface side of the side wall at the rear end of thetub-shaped member 6. Thus, it is possible to prevent the hollow needle 2housed in the tub-shaped member 6 from being further retreated to falloff from the tub-shaped member 6.

[0063] To prevent the falling-off of the hollow needle 2 from thetub-shaped member 6, means may be provided for maintaining engagementbetween the rack 4 and the gear 4 when the hollow needle 2 is housed inthe tub-shaped member 6.

[0064] In each of the foregoing embodiments, the first mode of theprotrusion maintaining means is combined with the first mode of thehousing maintaining means, and the second modes thereof are combinedwith each other. However, the first mode of the protrusion maintainingmeans may be connected to the second mode of the housing maintainingmeans. The second mode of the protrusion maintaining means may becombined with the first mode of the housing maintaining means.

[0065] Industrial Applicability

[0066] The present invention can be applied to a winged indwellingneedle used for temporarily securing a venous path or the like.

What is claimed is:
 1. A winged indwelling needle comprising: a hollowneedle having a knife point at its tip, a hub provided at a rear end ofthe hollow needle, a tub-shaped member for housing the hollow needle andthe hub slidingly in a longitudinal direction, a pair of wing-shapedmembers provided on an outer surface side of a side wall of thetub-shaped member, protrusion maintaining means for releasablymaintaining a state in which the hollow needle is protruded as much as apredetermined length from a tip of the tub-shaped member, and housingmaintaining means for maintaining a state in which the hollow needle ishoused in the tub-shaped member, said winged indwelling needle furthercomprising a rack provided in junction with the rear end of the hub, anda gear engaged with the rack and supported on an inner surface side ofthe side wall of the tub-shaped member, said hollow needle being driventhrough the rack by rotating the gear to be housed in the tub-shapedmember.
 2. The winged indwelling needle according to claim 1, whereinthe protrusion maintaining means comprises a first extension memberprovided at the rear end of the rack to be extended in a direction alongthe side wall, and a locking member which is provided to freely open andclose the rear end of the tub-shaped member and which locks a rear endof the extension member so as to maintain a state in which the hollowneedle is protruded as much as a predetermined length from the tip ofthe tub-shaped member when the rear end of the tub-shaped member isclosed.
 3. The winged indwelling needle according to claim 1, whereinthe protrusion maintaining means comprises a first handle integrallyattached to the gear rotatably together with the gear, and a firstprotruded portion provided on an inner surface side of the side wall atthe rear end of the tub-shaped member to detachably lock the firsthandle at a position where the hollow needle is protruded as much as apredetermined length from the tip of the tub-shaped member.
 4. Thewinged indwelling needle according to any one of claims 1 to 3, whereinthe housing maintaining means comprises a second protruded portionprovided to be protruded from the tip of the rack to its side, and anengaging concave portion provided on the inner surface side of the sidewall at the rear end of the tub-shaped member and engaged with thesecond protruded portion so as to maintain a state in which the hollowneedle is housed in the tub-shaped member.
 5. The winged indwellingneedle according to any one of claims 1 to 3, wherein the housingmaintaining means comprises a second handle integrally attached to thegear rotatably together with the gear, and a third protruded portionprovided on the inner surface side of the side wall in the tip of thetub-shaped member to detachably lock the second handle at a positionwhere the hollow needle is housed in the tub-shaped member.
 6. Thewinged indwelling needle according to claim 5, wherein the second handlecomprises, on its tip, a branch portion which is arranged in front ofthe knife point of the hollow needle when the second handle is engagedwith the third protruded portion.
 7. The winged indwelling needleaccording to claim 5 or 6, wherein the housing maintaining meanscomprises a fourth protruded portion provided on the side of the rack,and a fifth protruded portion provided on the inner surface side of theside wall of the tub-shaped member and engaged with the fourth protrudedportion at a position where the hollow needle is housed in thetub-shaped member.
 8. The winged indwelling needle according to any oneof claims 1 to 7, wherein the rack comprises a second extension memberextended from the rear end to the side to lock a rear end surface of thetub-shaped member, thereby preventing the tub-shaped member from movingbehind the rack.